Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Medicine and Health Sciences
The Role Of Lim Kinase 1 And Its Substrates In Cell Cycle Progression, Lisa Ritchey
The Role Of Lim Kinase 1 And Its Substrates In Cell Cycle Progression, Lisa Ritchey
Electronic Theses and Dissertations
LIM Kinase 1 (LIMK1), a modulator of actin and microtubule dynamics, has been shown to be involved in cell cycle progression. In this study we examine the role of LIMK1 in G1 phase and mitosis. We found ectopic expression of LIMK1 resulted in altered expression of p27Kip1, the G1 phase Cyclin D1/Cdk4 inhibitor. Overexpression of LIMK1 resulted in lower levels of p27Kip1 and p27Kip1-pY88 (inactive p27Kip1). Knockdown of LIMK1 resulted in elevated levels of p27Kip1 and p27Kip1-pY88. Together, these results suggest LIMK1 regulates progression of G1 phase through modulation of p27Kip1 expression. LIMK1 is involved in the mitotic process through …
Studies On A Novel Human Cardiospecific Transcription Factor And Its Involvement In Omi/Htra2 Mediated Cell Death, Meenakshi Puthucode Balakrishnan
Studies On A Novel Human Cardiospecific Transcription Factor And Its Involvement In Omi/Htra2 Mediated Cell Death, Meenakshi Puthucode Balakrishnan
Electronic Theses and Dissertations
Omi/HtrA2 is a mitochondrial serine protease that is known to translocate to the cytoplasm upon induction of apoptosis and to activate caspase-dependent and caspase-independent cell death. The molecular mechanism of Omi/HtrA2's function is not clear but involves degradation of specific substrates. These substrates include cytoplasmic, mitochondrial, as well as nuclear proteins. We have isolated a new Omi/HtrA2 interactor, the THAP5 protein. THAP5 is a fifth member of a large family of transcription factors that are involved in cell proliferation, apoptosis, cell cycle control, chromosome segregation, chromatin modification and transcriptional regulation. THAP5 is an approximately 50kDa nuclear protein, with a restricted …